Example usage for java.io FileOutputStream write

List of usage examples for java.io FileOutputStream write

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Introduction

In this page you can find the example usage for java.io FileOutputStream write.

Prototype

public void write(byte b[]) throws IOException

Source Link

Document

Writes b.length bytes from the specified byte array to this file output stream.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    Properties prop = new Properties();
    String s = "Chapter Count=200";
    String s2 = "Tutorial Count=15";

    // create a new input and output stream
    FileOutputStream fos = new FileOutputStream("properties.txt");
    FileInputStream fis = new FileInputStream("properties.txt");

    // write the first property in the output stream file
    fos.write(s.getBytes());

    // change the line between the two properties
    fos.write("\n".getBytes());

    // write next property
    fos.write(s2.getBytes());//from  w  ww  . j  a va 2  s  .co m

    // load from input stream
    prop.load(fis);

    // print the properties list from System.out
    prop.list(System.out);

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Class.forName("oracle.jdbc.driver.OracleDriver");
    Connection conn = DriverManager.getConnection(url, username, password);

    String sql = "SELECT name, description, image FROM pictures ";
    PreparedStatement stmt = conn.prepareStatement(sql);
    ResultSet resultSet = stmt.executeQuery();
    while (resultSet.next()) {
        String name = resultSet.getString(1);
        String description = resultSet.getString(2);
        File image = new File("D:\\java.gif");
        FileOutputStream fos = new FileOutputStream(image);

        byte[] buffer = new byte[1];
        InputStream is = resultSet.getBinaryStream(3);
        while (is.read(buffer) > 0) {
            fos.write(buffer);
        }/*from   w ww .j a  v  a2 s.  c o  m*/
        fos.close();
    }
    conn.close();
}

From source file:com.cliqset.magicsig.util.KeyGen.java

public static void main(String[] args) {
    try {//  w w w  . jav a  2s .c om
        FileOutputStream fos = new FileOutputStream(fileName);
        for (int x = 0; x < numKeys; x++) {
            fos.write((x + " RSA.").getBytes("ASCII"));
            KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
            keyPairGenerator.initialize(keySize);
            KeyPair keyPair = keyPairGenerator.genKeyPair();

            KeyFactory keyFactory = KeyFactory.getInstance("RSA");
            RSAPublicKeySpec publicSpec = keyFactory.getKeySpec(keyPair.getPublic(), RSAPublicKeySpec.class);
            RSAPrivateKeySpec privateSpec = keyFactory.getKeySpec(keyPair.getPrivate(),
                    RSAPrivateKeySpec.class);

            fos.write(Base64.encodeBase64URLSafe(getBytes(publicSpec.getModulus())));

            fos.write(".".getBytes("ASCII"));

            fos.write(Base64.encodeBase64URLSafe(getBytes(publicSpec.getPublicExponent())));

            fos.write(".".getBytes("ASCII"));

            fos.write(Base64.encodeBase64URLSafe(getBytes(privateSpec.getPrivateExponent())));

            fos.write("\n".getBytes("ASCII"));

            System.out.println(x);
        }
        fos.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.sight.facialrecog.util.ImageManipulation.java

/**
 * @param args/* w  w  w . j  a  va  2  s.co m*/
 */
public static void main(String[] args) {
    File file = new File("/home/sight/Pictures/imagetest/close.jpg");

    try {
        /*
         * Reading an Image file from file system
         */
        FileInputStream imageInFile = new FileInputStream(file);
        byte imageData[] = new byte[(int) file.length()];
        imageInFile.read(imageData);

        /*
         * Converting Image byte array into Base64 String
         */
        String imageDataString = encodeImage(imageData);
        System.out.println(imageDataString);

        /*
         * Converting a Base64 String into Image byte array
         */
        byte[] imageByteArray = decodeImage(imageDataString);

        /*
         * Write an image byte array into file system
         */
        FileOutputStream imageOutFile = new FileOutputStream(
                "/home/sight/Pictures/imagetest/close-after-convert.jpg");
        imageOutFile.write(imageByteArray);

        imageInFile.close();
        imageOutFile.close();

        System.out.println("Image Successfully Manipulated!");
    } catch (FileNotFoundException e) {
        System.out.println("Image not found" + e);
    } catch (IOException ioe) {
        System.out.println("Exception while reading the Image " + ioe);
    }

}

From source file:CopyBytes.java

public static void main(String[] args) throws IOException {
    FileInputStream in = null;// ww  w  .j  a  v  a  2 s  .  c  o m
    FileOutputStream out = null;
    try {
        in = new FileInputStream("xanadu.txt");
        out = new FileOutputStream("outagain.txt");
        int c;

        while ((c = in.read()) != -1) {
            out.write(c);
        }

    } finally {
        if (in != null) {
            in.close();
        }
        if (out != null) {
            out.close();
        }
    }
}

From source file:com.ctriposs.rest4j.tools.data.FilterSchemaGenerator.java

public static void main(String[] args) {
    final CommandLineParser parser = new GnuParser();
    CommandLine cl = null;/*from www .jav a2 s.  co m*/
    try {
        cl = parser.parse(_options, args);
    } catch (ParseException e) {
        _log.error("Invalid arguments: " + e.getMessage());
        reportInvalidArguments();
    }

    final String[] directoryArgs = cl.getArgs();
    if (directoryArgs.length != 2) {
        reportInvalidArguments();
    }

    final File sourceDirectory = new File(directoryArgs[0]);
    if (!sourceDirectory.exists()) {
        _log.error(sourceDirectory.getPath() + " does not exist");
        System.exit(1);
    }
    if (!sourceDirectory.isDirectory()) {
        _log.error(sourceDirectory.getPath() + " is not a directory");
        System.exit(1);
    }
    final URI sourceDirectoryURI = sourceDirectory.toURI();

    final File outputDirectory = new File(directoryArgs[1]);
    if (outputDirectory.exists() && !sourceDirectory.isDirectory()) {
        _log.error(outputDirectory.getPath() + " is not a directory");
        System.exit(1);
    }

    final boolean isAvroMode = cl.hasOption('a');
    final String predicateExpression = cl.getOptionValue('e');
    final Predicate predicate = PredicateExpressionParser.parse(predicateExpression);

    final Collection<File> sourceFiles = FileUtil.listFiles(sourceDirectory, null);
    int exitCode = 0;
    for (File sourceFile : sourceFiles) {
        try {
            final ValidationOptions val = new ValidationOptions();
            val.setAvroUnionMode(isAvroMode);

            final SchemaParser schemaParser = new SchemaParser();
            schemaParser.setValidationOptions(val);

            schemaParser.parse(new FileInputStream(sourceFile));
            if (schemaParser.hasError()) {
                _log.error("Error parsing " + sourceFile.getPath() + ": "
                        + schemaParser.errorMessageBuilder().toString());
                exitCode = 1;
                continue;
            }

            final DataSchema originalSchema = schemaParser.topLevelDataSchemas().get(0);
            if (!(originalSchema instanceof NamedDataSchema)) {
                _log.error(sourceFile.getPath() + " does not contain valid NamedDataSchema");
                exitCode = 1;
                continue;
            }

            final SchemaParser filterParser = new SchemaParser();
            filterParser.setValidationOptions(val);

            final NamedDataSchema filteredSchema = Filters.removeByPredicate((NamedDataSchema) originalSchema,
                    predicate, filterParser);
            if (filterParser.hasError()) {
                _log.error("Error applying predicate: " + filterParser.errorMessageBuilder().toString());
                exitCode = 1;
                continue;
            }

            final String relativePath = sourceDirectoryURI.relativize(sourceFile.toURI()).getPath();
            final String outputFilePath = outputDirectory.getPath() + File.separator + relativePath;
            final File outputFile = new File(outputFilePath);
            final File outputFileParent = outputFile.getParentFile();
            outputFileParent.mkdirs();
            if (!outputFileParent.exists()) {
                _log.error("Unable to write filtered schema to " + outputFileParent.getPath());
                exitCode = 1;
                continue;
            }

            FileOutputStream fout = new FileOutputStream(outputFile);
            fout.write(filteredSchema.toString().getBytes(RestConstants.DEFAULT_CHARSET));
            fout.close();
        } catch (IOException e) {
            _log.error(e.getMessage());
            exitCode = 1;
        }
    }

    System.exit(exitCode);
}

From source file:com.moscona.dataSpace.debug.BadLocks.java

public static void main(String[] args) {
    try {/*from w w  w .j  a va 2 s  .co  m*/
        String lockFile = "C:\\Users\\Admin\\projects\\intellitrade\\tmp\\bad.lock";
        FileUtils.touch(new File(lockFile));
        FileOutputStream stream = new FileOutputStream(lockFile);
        //            FileInputStream stream = new FileInputStream(lockFile);
        FileChannel channel = stream.getChannel();
        //            FileLock lock = channel.lock(0,Long.MAX_VALUE, true);
        FileLock lock = channel.lock();
        stream.write(new UndocumentedJava().pid().getBytes());
        stream.flush();
        long start = System.currentTimeMillis();
        //            while (System.currentTimeMillis()-start < 10000) {
        //                Thread.sleep(500);
        //            }
        lock.release();
        stream.close();
        File f = new File(lockFile);
        System.out.println("Before write: " + FileUtils.readFileToString(f));
        FileUtils.writeStringToFile(f, "written after lock released");
        System.out.println("After write: " + FileUtils.readFileToString(f));
    } catch (Exception e) {
        e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
    }

}

From source file:createSod.java

/**
 * @param args/*from  ww w.j a va2s  . c  om*/
 * @throws CMSException 
 */
public static void main(String[] args) throws Exception {

    try {
        CommandLine options = verifyArgs(args);
        String privateKeyLocation = options.getOptionValue("privatekey");
        String keyPassword = options.getOptionValue("keypass");
        String certificate = options.getOptionValue("certificate");
        String sodContent = options.getOptionValue("content");
        String sod = "";
        if (options.hasOption("out")) {
            sod = options.getOptionValue("out");
        }

        // CHARGEMENT DU FICHIER PKCS#12

        KeyStore ks = null;
        char[] password = null;

        Security.addProvider(new BouncyCastleProvider());
        try {
            ks = KeyStore.getInstance("PKCS12");
            // Password pour le fichier personnal_nyal.p12
            password = keyPassword.toCharArray();
            ks.load(new FileInputStream(privateKeyLocation), password);
        } catch (Exception e) {
            System.out.println("Erreur: fichier " + privateKeyLocation
                    + " n'est pas un fichier pkcs#12 valide ou passphrase incorrect");
            return;
        }

        // RECUPERATION DU COUPLE CLE PRIVEE/PUBLIQUE ET DU CERTIFICAT PUBLIQUE

        X509Certificate cert = null;
        PrivateKey privatekey = null;
        PublicKey publickey = null;

        try {
            Enumeration en = ks.aliases();
            String ALIAS = "";
            Vector vectaliases = new Vector();

            while (en.hasMoreElements())
                vectaliases.add(en.nextElement());
            String[] aliases = (String[]) (vectaliases.toArray(new String[0]));
            for (int i = 0; i < aliases.length; i++)
                if (ks.isKeyEntry(aliases[i])) {
                    ALIAS = aliases[i];
                    break;
                }
            privatekey = (PrivateKey) ks.getKey(ALIAS, password);
            cert = (X509Certificate) ks.getCertificate(ALIAS);
            publickey = ks.getCertificate(ALIAS).getPublicKey();
        } catch (Exception e) {
            e.printStackTrace();
            return;
        }

        // Chargement du certificat  partir du fichier

        InputStream inStream = new FileInputStream(certificate);
        CertificateFactory cf = CertificateFactory.getInstance("X.509");
        cert = (X509Certificate) cf.generateCertificate(inStream);
        inStream.close();

        // Chargement du fichier qui va tre sign

        File file_to_sign = new File(sodContent);
        byte[] buffer = new byte[(int) file_to_sign.length()];
        DataInputStream in = new DataInputStream(new FileInputStream(file_to_sign));
        in.readFully(buffer);
        in.close();

        // Chargement des certificats qui seront stocks dans le fichier .p7
        // Ici, seulement le certificat personnal_nyal.cer sera associ.
        // Par contre, la chane des certificats non.

        ArrayList certList = new ArrayList();
        certList.add(cert);
        CertStore certs = CertStore.getInstance("Collection", new CollectionCertStoreParameters(certList),
                "BC");

        CMSSignedDataGenerator signGen = new CMSSignedDataGenerator();

        // privatekey correspond  notre cl prive rcupre du fichier PKCS#12
        // cert correspond au certificat publique personnal_nyal.cer
        // Le dernier argument est l'algorithme de hachage qui sera utilis

        signGen.addSigner(privatekey, cert, CMSSignedDataGenerator.DIGEST_SHA1);
        signGen.addCertificatesAndCRLs(certs);
        CMSProcessable content = new CMSProcessableByteArray(buffer);

        // Generation du fichier CMS/PKCS#7
        // L'argument deux permet de signifier si le document doit tre attach avec la signature
        //     Valeur true:  le fichier est attach (c'est le cas ici)
        //     Valeur false: le fichier est dtach

        CMSSignedData signedData = signGen.generate(content, true, "BC");
        byte[] signeddata = signedData.getEncoded();

        // Ecriture du buffer dans un fichier.   

        if (sod.equals("")) {
            System.out.print(signeddata.toString());
        } else {
            FileOutputStream envfos = new FileOutputStream(sod);
            envfos.write(signeddata);
            envfos.close();
        }

    } catch (OptionException oe) {
        HelpFormatter formatter = new HelpFormatter();
        formatter.printHelp(NAME, getOptions());
        System.exit(-1);
    } catch (Exception e) {
        e.printStackTrace();
        return;
    }

}

From source file:importer.handler.post.stages.Splitter.java

/** test and commandline utility */
public static void main(String[] args) {
    if (args.length >= 1) {
        try {/*from  ww  w . jav  a  2s  .c  om*/
            int i = 0;
            int fileIndex = 0;
            // see if the user supplied a conf file
            String textConf = Discriminator.defaultConf;
            while (i < args.length) {
                if (args[i].equals("-c") && i < args.length - 1) {
                    textConf = readConfig(args[i + 1]);
                    i += 2;
                } else {
                    fileIndex = i;
                    i++;
                }
            }
            File f = new File(args[fileIndex]);
            char[] data = new char[(int) f.length()];
            FileReader fr = new FileReader(f);
            fr.read(data);
            JSONObject config = (JSONObject) JSONValue.parse(textConf);
            Splitter split = new Splitter(config);
            Map<String, String> map = split.split(new String(data));
            Set<String> keys = map.keySet();
            String rawFileName = args[fileIndex];
            int pos = rawFileName.lastIndexOf(".");
            if (pos != -1)
                rawFileName = rawFileName.substring(0, pos);
            Iterator<String> iter = keys.iterator();
            while (iter.hasNext()) {
                String key = iter.next();
                String fName = rawFileName + "-" + key + ".xml";
                File g = new File(fName);
                if (g.exists())
                    g.delete();
                FileOutputStream fos = new FileOutputStream(g);
                fos.write(map.get(key).getBytes("UTF-8"));
                fos.close();
            }
        } catch (Exception e) {
            e.printStackTrace(System.out);
        }
    } else
        System.out.println("usage: java -jar split.jar [-c json-config] <tei-xml>\n");
}

From source file:com.linkedin.restli.tools.data.FilterSchemaGenerator.java

public static void main(String[] args) {
    CommandLine cl = null;/*from  ww  w.j  a  v a 2 s. c  o  m*/
    try {
        final CommandLineParser parser = new GnuParser();
        cl = parser.parse(_options, args);
    } catch (ParseException e) {
        _log.error("Invalid arguments: " + e.getMessage());
        reportInvalidArguments();
    }

    final String[] directoryArgs = cl.getArgs();
    if (directoryArgs.length != 2) {
        reportInvalidArguments();
    }

    final File sourceDirectory = new File(directoryArgs[0]);
    if (!sourceDirectory.exists()) {
        _log.error(sourceDirectory.getPath() + " does not exist");
        System.exit(1);
    }
    if (!sourceDirectory.isDirectory()) {
        _log.error(sourceDirectory.getPath() + " is not a directory");
        System.exit(1);
    }
    final URI sourceDirectoryURI = sourceDirectory.toURI();

    final File outputDirectory = new File(directoryArgs[1]);
    if (outputDirectory.exists() && !sourceDirectory.isDirectory()) {
        _log.error(outputDirectory.getPath() + " is not a directory");
        System.exit(1);
    }

    final boolean isAvroMode = cl.hasOption('a');
    final String predicateExpression = cl.getOptionValue('e');
    final Predicate predicate = PredicateExpressionParser.parse(predicateExpression);

    final Collection<File> sourceFiles = FileUtil.listFiles(sourceDirectory, null);
    int exitCode = 0;
    for (File sourceFile : sourceFiles) {
        try {
            final ValidationOptions val = new ValidationOptions();
            val.setAvroUnionMode(isAvroMode);

            final SchemaParser schemaParser = new SchemaParser();
            schemaParser.setValidationOptions(val);

            schemaParser.parse(new FileInputStream(sourceFile));
            if (schemaParser.hasError()) {
                _log.error("Error parsing " + sourceFile.getPath() + ": " + schemaParser.errorMessageBuilder());
                exitCode = 1;
                continue;
            }

            final DataSchema originalSchema = schemaParser.topLevelDataSchemas().get(0);
            if (!(originalSchema instanceof NamedDataSchema)) {
                _log.error(sourceFile.getPath() + " does not contain valid NamedDataSchema");
                exitCode = 1;
                continue;
            }

            final SchemaParser filterParser = new SchemaParser();
            filterParser.setValidationOptions(val);

            final NamedDataSchema filteredSchema = Filters.removeByPredicate((NamedDataSchema) originalSchema,
                    predicate, filterParser);
            if (filterParser.hasError()) {
                _log.error("Error applying predicate: " + filterParser.errorMessageBuilder());
                exitCode = 1;
                continue;
            }

            final String relativePath = sourceDirectoryURI.relativize(sourceFile.toURI()).getPath();
            final String outputFilePath = outputDirectory.getPath() + File.separator + relativePath;
            final File outputFile = new File(outputFilePath);
            final File outputFileParent = outputFile.getParentFile();
            outputFileParent.mkdirs();
            if (!outputFileParent.exists()) {
                _log.error("Unable to write filtered schema to " + outputFileParent.getPath());
                exitCode = 1;
                continue;
            }

            FileOutputStream fout = new FileOutputStream(outputFile);
            String schemaJson = SchemaToJsonEncoder.schemaToJson(filteredSchema, JsonBuilder.Pretty.INDENTED);
            fout.write(schemaJson.getBytes(RestConstants.DEFAULT_CHARSET));
            fout.close();
        } catch (IOException e) {
            _log.error(e.getMessage());
            exitCode = 1;
        }
    }

    System.exit(exitCode);
}